THAI FOREST BULLETIN

XEROCHLOA R.BR. (GRAMINEAE, PANICEAE) IN THAILAND (J.F. VELDKAMP)
Thailand.— CENTRAL: Samut Sakhon [Tachin = Ta Chin, 13˚32’N 100˚14’ E,
31 March 1926, Kerr 10664 (K), 24 Oct. 1926, Kerr 11052 (K)], Samut Songkhram
(formerly part of Bangkok) [ca 13˚22’N 100˚E, Pak Nam, 9 Jan. 1957, Smitinand 3696
(BKF)]; SOUTH-EASTERN: Chonburi [Bang Pla Soi, 27 Jan. 1920, Kerr 3967 (K), 13˚23’N,
100˚59’E]; SOUTH-WESTERN: Prachuap Khiri Khan [Sam Roi Yot (not Rachaburi!), ca
12˚13’7”N 99˚58’21”E, 7 Aug. 1966, Larsen, Smitinand & Warncke 1213 (aaU, BKF,
K), Kuiburi, KM 37 on road no. 1020 near Khao Daeng, 12˚7.54’N 99˚37.56’ E (and not
as on the label 12˚7’54”N 99˚37’56”E), 26 April 2005, Pooma et al. 5289 (BKF, E, L!),
(ibid., 12˚8.858’N 99˚57.829’ E, not 12˚88’58”N 99˚57’83”E, 30 April 2007, Pooma et
al. 6710 (a, aaU, BKF, E, GZU, K, KEP, L!, sinG), Hua Hin, Khao Tao, 12˚34’ N
99˚57’ E, 8 Nov. 1928, Kerr 16118 (K)].
Said to be very common along the Gulf of Thailand coast from mid Prachuap
Khiri Khan to Chonburi, especially near shrimp and salt farms (Fig. 1).
Distribution.— Malesia: Java (N coast: Jakarta, Ceribon, Pekalongan, Semarang,
Rembang, Surabaya), Madura, W Australia to Queensland.
Ecology.— Littoral in mangroves, on beaches, along fish ponds, roadsides, on
heavy loam, occasionally inundated, also inland along salt creeks and lakes, up to 100 m alt.
Collector’s notes.— Erect grass, tufted, nodes pale green. Spikelets purplish
brown. Glumes greenish. Stigma purple and white. Anthers whitish.
acKnoWLEDGEMEnTs
Dr. Rachun Pooma (BKF) is very much thanked for sending scans of specimens
present in BKF, for correcting localities, and information about the distribution of the
species in Thailand, and Dr. T.A. Cope for the holdings in K. Ms. A.V.M. Walsmit Sachs-
Jansen (L) after having seen my amateurish attempts volunteered to make the distribution
map.
REFEREncEs
Backer, C.A. (1936). Verklarend woordenboek van wetenschappelijke plantennamen:
301, 631. Noordhoff, Groningen.
Clayton, W.D. & Renvoize, S.A. (1986). Genera graminum: 307. Her Majesty’s Stationery
Office,
Clayton, W.D., K.T. Harman & H. Williamson. (2002 onwards). World grass species:
descriptions, identification, and information retrieval (accessed 27 September
2009).
________. (2006 onwards). GrassBase - The Online World Grass Flora. Both sites: http://
www.kew.org/data/grasses-db.html (accessed 27 September 2009).
Doust, A.N., Peenly, A.M., Jacobs, S.W.L. & Kellogg, A.A. (2007). Congruence,
conflict, and polyploidization shown by nuclear and chloroplast markers in the
monophyletic “bristle clade” (Paniceae, Panicoideae, Poaceae). Systematic Botany
32: 531–544.
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